I 
ration. Vet in all thefe Experiments we never could obferve 
any indifpofition in the Dogs which receiv’d the Blood » 
whence we became confirm’d in the Opinion , that there was 
more ground to hope effeds rather advantageous than hurt- 
ful to mankind,from this difcovery of Transfufion of Blood. 
Nevertheleisjthat we might vent nothing unadvifedly, we 
publifht thefe Experiments, and were well pleafed to under- 
ftand the judgment of the ableft Philosopher* and Phyfitians, 
upon the matter we examin’d, whether any of them had rea- 
fons weighty enough to diffuade us from carrying on our try- 
als even in Man 5 and I befeech you permit me to fum up the 
principal here which are come to my knowledge, and judge 
yourfelf whether they ought to have ftopt us, and whether we 
ideferve praife or blame for having proceeded further. Some 
have attaqu’d this defign by decrying it as Chymerical & im- 
poffible. 1. Becaufe the diverfity of Complexions (which is 
founded in the Blood) fuppofeth fo great a diverfity in the fe- 
vers! Bloods of different Animals, that ’cis impoflible but one 
muft be Poyfon and Venome in refped of another. 2. Be- 
caufe Blood entravafated or remov’d out of its natural place, 
mult necelfarily corrupt, according to the didate of Hyppo - 
crates. 3. Becaufe the Blood iffuing out of its proper Vef- 
fels, and being to pafs through inanimated conveyances, fuch 
as are the Pipes or Tubes employ’d in the Trans fufion ; it 
muft infallibly coagulate,and fo coagulated defending to the 
heart muft caufe there a Palpitation, whereof death will be the 
fpeedy confequent. 
Thefe Realom have not appear’d to us of great impor- 
tance. For as to the firft, wc acknowledge that there are as 
many different complexions and various qualities in the blood, 
as there are Individuals in every Species : But we believe it not 
conclufible from thence, that the Blood of one muft be Poy- 
fon in refped of others ; no more than it follows, that all the 
Meats wherewith we are notirilhr, and whereof our Blood is 
only an Elixir or Quinteffence, muft corrupt and poifon the 
fame, becaufe they are endu’d with qualities differing from 
C c c 2 thofe 
